<template>
  <div>
    <!-- 条件渲染指令 v-if,v-show -->
    <p v-if="flag">v-if</p>
    <p v-show="!flag">v-show</p>
    <button @click="flag = !flag">点我更换内容</button>
  </div>
</template>
<script setup>
import { ref } from "vue";
const flag = ref(true);
</script>
